并网逆变器功率和合成谐波阻抗联合控制策略  

Combined control strategy of power and synthetic harmonic impedance for grid connected inverter

作　　者：王湘明[1] 张玮玮[1] 王卫鑫[1] 

机构地区：[1]沈阳工业大学信息科学与工程学院,沈阳110870

出　　处：《沈阳工业大学学报》2016年第2期127-132,共6页Journal of Shenyang University of Technology

基　　金：科技部科技型中小企业技术创新基金资助项目(13C26212101002)

摘　　要：为了抑制电网中因非线性负载和电力电子器件的大量使用而产生的谐波,给出了并网逆变器的给定功率和合成谐波阻抗联合控制策略.该策略能够根据给定的有功功率和无功功率控制系统,并且在电流环电压环上加入了谐波阻抗环.Matlab/Simulink结果显示,该控制策略能够在实现并网逆变器并网的同时起到有效抑制电网谐波的作用.仿真结果表明,此方法能够抑制电流谐波,也使得电网电压谐波得到有效抑制,并避免了电网线路上的谐振.In order to suppress the harmonics generated by the mass use of nonlinear loads and power electronic devices in the power grid, a combined control strategy of given power and synthetic harmonic impedance for grid connected inverter was proposed. This strategy could control the system according to given active power and reactive power, and the harmonic impedance loop was added to both current loop and voltage loop. The results of Maflab/Simulink simulation show that the proposed control strategy can effectively suppress the power grid harmonics, and realize the grid connection of grid connected inverter at the same time. The simulated results show that the strategy can effectively suppress the current harmonics and voltage harmonics in the power grid, and the resonance on the power grid circuit can be avoided.

关 键 词：逆变器 电网 PR控制器 功率控制 谐波阻抗 二阶广义积分器 谐波抑制 MATLAB/SIMULINK仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]